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Company Info
what do you mean by hotline for the PDH multiplexer
With hotline, it can communicate between two PDH multiplexers.
On the front panel there is a “PH” button, press on the “PH” button on the remote site it will sound.
To answer it the remote site just need to press the “PH” button on the remote unit, the alarm will cut off and just plug in the phone both side able to do the communication.
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